Stony goiter, known as thyroid malignant tumor in western medicine, is currently one of the most common types of head and neck malignant tumor in clinical practice, and various complications often occur after surgery. Professor Xu Zhiyin believes that the patients with stony goiter are often manifested as the syndrome of qi and yin deficiency after surgery. Therefore, he treats the disease mainly by benefiting qi and nourishing yin. At the same time, he pays attention to regulating the lungs, spleen and kidney, maintaining the normal function of the viscera. After operation, he uses scorpion to remove the remaining pathogenic factors for a short time, and uses American ginseng to replenish qi and strengthen the body for a long time, and to fight the side effects of levothyroxine sodium tablets at the same time.